Prasanth Jayachandran created HIVE-13083:
--------------------------------------------
Summary: Writing HiveDecimal to ORC can wrongly suppress present
stream
Key: HIVE-13083
URL: https://issues.apache.org/jira/browse/HIVE-13083
Project: Hive
Issue Type: Bug
Affects Versions: 2.0.0, 1.1.0, 1.2.0, 1.0.0, 0.14.0, 0.13.0, 1.3.0, 2.1.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
HIVE-3976 can cause ORC file to be unreadable. The changes introduced in
HIVE-3976 for DecimalTreeWriter can create null values after updating the
isPresent stream.
https://github.com/apache/hive/blob/branch-0.13/ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java#L1337
As result of the above return statement, isPresent stream state can become
wrong. The isPresent stream thinks all values are non-null and hence
suppressed. But the data stream will be of 0 length. When reading such files we
will get the following exception
{code}
Caused by: java.io.EOFException: Reading BigInteger past EOF from compressed
stream Stream for column 3 kind DATA position: 0 length: 0 range: 0 offset: 0
limit: 0
at
org.apache.hadoop.hive.ql.io.orc.SerializationUtils.readBigInteger(SerializationUtils.java:176)
at
org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory$DecimalTreeReader.next(TreeReaderFactory.java:1264)
at
org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory$StructTreeReader.next(TreeReaderFactory.java:2004)
at
org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.next(RecordReaderImpl.java:1039)
... 24 more
{code}
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